Lotus Evora. Manual - part 29

 

 

Lotus Service Notes   

 

 

  Section EMR

2009/02

 

 

Lotus Service Notes   

 

 

  Section EMR

 

2009/02

 

 

Lotus Service Notes   

 

 

  Section EMR

Evaporative Emission Control – Purge, Open / Closed Circuit

P0444  Evaporative Emission System Purge Control Valve Circuit Open

P0445  Evaporative Emission System Purge Control Valve Circuit Closed

P0446  Evaporative Emission System Vent Control Circuit

P0447  Evaporative Emission System Vent Control Circuit Open

P0448  Evaporative Emission System Vent Control Circuit Closed

P0451  Evaporative Emission System Pressure Sensor/Switch Range/Performance

P0452  Evaporative Emission System Pressure Sensor/Switch Low

P0453  Evaporative Emission System Pressure Sensor/Switch High

Description

When the engine is running the ECU continuously monitors the status of the evaporative emission components 

for open circuit or short. The feedback signal should be low when turned ON and high when turned OFF. The 

following codes will be set if the above conditions are not met.

P0444, P0445 

Sensor / component connections

Purge Solenoid

Connector Pins   Description      ECU Pin    ECU Connector

1            Battery Voltage   -        -

2            Solenoid Output  B3       48 Way (Centre)

Potential failure modes:

•  P0444 Purge valve/wiring open circuit

•  P0445 Purge valve short circuit

Diagnostic mask:

•  The MIL will be illuminated if these faults are present for 2 consecutive trips.

2009/02

 

 

Lotus Service Notes   

 

 

  Section EMR

2009/02